Direct observation and quantification of grain boundary shear-migration coupling in polycrystalline Al

被引：57
作者：
Mompiou, F. [1 ]
Legros, M. [1 ]
Caillard, D. [1 ]
机构：
[1] CEMES CNRS, F-31055 Toulouse, France
来源：
JOURNAL OF MATERIALS SCIENCE | 2011年 / 46卷 / 12期
关键词：
INSITU OBSERVATIONS; MOTION; DEFORMATION; TRANSLATION; BEHAVIOR; KINETICS; FILMS; MODEL;
D O I：
10.1007/s10853-011-5369-z
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Rapid grain boundary motion under stress has been observed during in-situ TEM straining experiment in polycrystalline Al at moderate temperatures. Crystallographic orientation of both sides of moving grain boundaries (GBs) was simultaneously recorded. A shear produced by the grain boundary migration has been estimated using fiducial markers and image correlation yielding a coupling factor (i.e., ratio of the shear strain over the migration distance) of around 7%. This result is compared to existing models based on shear coupled migration theories, and is discussed within the new Shear Migration Geometrical model (SMIG).
引用
收藏
页码：4308 / 4313
页数：6
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